Sputtered Si-containing low-friction carbon coatings for elevated temperatures

Sputtered Si-containing low-friction carbon coatings for elevated temperatures

This work presents a tribological study on three sputtered amorphous carbon-based coatings containing Si and Cr (a-C, a-C:Cr and a-C:Si). Molecular dynamics simulations predict tetrahedral bonds between C and Si in the a-C matrix. Ball-on-disk-tests against Al2O3 carried out at room temperature reve...

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Veröffentlicht in:Tribology international 2014-09, Vol.77, p.15-23
Hauptverfasser: Jantschner, O., Field, S.K., Music, D., Terziyska, V.L., Schneider, J.M., Munnik, F., Zorn, K., Mitterer, C.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum oxide
Amorphous carbon
Carbon
Coatings
Elevated temperatures
Silicon
Simulation
Temperature induced lubrication
Thermal stability
Tribology
Wear rate
X-rays
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Zusammenfassung:This work presents a tribological study on three sputtered amorphous carbon-based coatings containing Si and Cr (a-C, a-C:Cr and a-C:Si). Molecular dynamics simulations predict tetrahedral bonds between C and Si in the a-C matrix. Ball-on-disk-tests against Al2O3 carried out at room temperature revealed a coefficient of friction of 0.08–0.1 for all films. Between 250 and 325°C, Si decreases the COF and wear rate to
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2014.04.006